Dr. Mary Ling
Anna May Wong
Frank Baturin
Akim Tamiroff
2nd Interne
Archie Twitchell
Bert, fight trainer
Edward Marr
Detective
George Anderson
1st Gangster
Charles B. Wood
2nd Gangster
George Magrill
Dr. Jones
Charles Trowbridge
Chinese Woman
Lily King
Chinese Man
Wong Chong
Mr. Foo
Chester Gan
Announcer at Fight
Pat West
The Professor
J. Carrol Naish
Investigator
Guy Usher
Detective (uncredited)
Raoul Freeman
Dr. Chang Ling
Sidney Toler
Robert 'Bob' Li
Philip Ahn
Mike Gordon
Anthony Quinn
Dolly Warren
Bernadene Hayes
Rep Harrigan
Roscoe Karns
Potatoes
Ray Mayer
Interne
Richard Denning
Costume Design
Edith Head
Screenplay
Irving Reis
Story
Herbert J. Biberman
Director
Nick Grindé
Lillie Hayward
Producer
Harold Hurley
Art Direction
Hans Dreier
Editor
Eda Warren
Robert Odell
Set Decoration
A. E. Freudeman
Sound Recordist
Glenn Rominger
Director of Photography
Leo Tover
Charles Hisserich